From 0832aac79517611dd4de93ad0a83577994d9c907 Mon Sep 17 00:00:00 2001
From: "djm@openbsd.org" <djm@openbsd.org>
Date: Tue, 18 Feb 2025 08:02:48 +0000
Subject: upstream: Fix cases where error codes were not correctly set

Reported by the Qualys Security Advisory team. ok markus@

OpenBSD-Commit-ID: 7bcd4ffe0fa1e27ff98d451fb9c22f5fae6e610d
Conflict:NA
Reference:https://anongit.mindrot.org/openssh.git/commit/?id=0832aac79517611dd4de93ad0a83577994d9c907

---
 krl.c           | 2 ++
 ssh-sk-client.c | 1 +
 sshconnect2.c   | 5 ++++-
 sshsig.c        | 1 +
 4 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/krl.c b/krl.c
index ebeee5c..8e94fea 100644
--- a/krl.c
+++ b/krl.c
@@ -676,6 +676,7 @@ revoked_certs_generate(struct revoked_certs *rc, struct sshbuf *buf)
 			break;
 		case KRL_SECTION_CERT_SERIAL_BITMAP:
 			if (rs->lo - bitmap_start > INT_MAX) {
+				r = SSH_ERR_INVALID_FORMAT;
 				error_f("insane bitmap gap");
 				goto out;
 			}
@@ -1010,6 +1011,7 @@ ssh_krl_from_blob(struct sshbuf *buf, struct ssh_krl **krlp,
 		goto out;
 
 	if ((krl = ssh_krl_init()) == NULL) {
+		r = SSH_ERR_ALLOC_FAIL;
 		error_f("alloc failed");
 		goto out;
 	}
diff --git a/ssh-sk-client.c b/ssh-sk-client.c
index 3ac16f5..5f463b5 100644
--- a/ssh-sk-client.c
+++ b/ssh-sk-client.c
@@ -411,6 +411,7 @@ sshsk_load_resident(const char *provider_path, const char *device,
 		if ((tmp = recallocarray(keys, nkeys, nkeys + 1,
 		    sizeof(*keys))) == NULL) {
 			error_f("recallocarray keys failed");
+			r = SSH_ERR_ALLOC_FAIL;
 			goto out;
 		}
 		debug_f("keys[%zu]: %s %s", nkeys, sshkey_type(key),
diff --git a/sshconnect2.c b/sshconnect2.c
index 414fa2e..d9bfe15 100644
--- a/sshconnect2.c
+++ b/sshconnect2.c
@@ -97,7 +97,7 @@ static int
 verify_host_key_callback(struct sshkey *hostkey, struct ssh *ssh)
 {
 	if (verify_host_key(xxx_host, xxx_hostaddr, hostkey,
-	    xxx_conn_info) == -1)
+	    xxx_conn_info) != 0)
 		fatal("Host key verification failed.");
 	return 0;
 }
@@ -806,6 +806,7 @@ input_userauth_pk_ok(int type, u_int32_t seq, struct ssh *ssh)
 
 	if ((pktype = sshkey_type_from_name(pkalg)) == KEY_UNSPEC) {
 		debug_f("server sent unknown pkalg %s", pkalg);
+		r = SSH_ERR_INVALID_FORMAT;
 		goto done;
 	}
 	if ((r = sshkey_from_blob(pkblob, blen, &key)) != 0) {
@@ -816,6 +817,7 @@ input_userauth_pk_ok(int type, u_int32_t seq, struct ssh *ssh)
 		error("input_userauth_pk_ok: type mismatch "
 		    "for decoded key (received %d, expected %d)",
 		    key->type, pktype);
+		r = SSH_ERR_INVALID_FORMAT;
 		goto done;
 	}
 
@@ -835,6 +837,7 @@ input_userauth_pk_ok(int type, u_int32_t seq, struct ssh *ssh)
 		    SSH_FP_DEFAULT);
 		error_f("server replied with unknown key: %s %s",
 		    sshkey_type(key), fp == NULL ? "<ERROR>" : fp);
+		r = SSH_ERR_INVALID_FORMAT;
 		goto done;
 	}
 	ident = format_identity(id);
diff --git a/sshsig.c b/sshsig.c
index 5b3209a..a513138 100644
--- a/sshsig.c
+++ b/sshsig.c
@@ -970,6 +970,7 @@ cert_filter_principals(const char *path, u_long linenum,
 	}
 	if ((principals = sshbuf_dup_string(nprincipals)) == NULL) {
 		error_f("buffer error");
+		r = SSH_ERR_ALLOC_FAIL;
 		goto out;
 	}
 	/* success */
-- 
2.33.0